Feeding-machine.



No. 090,702.- V Patented mj, |902.

F. L ..0R0ss.y

' FEEDING mAcHlNE.

(Anplic'ation mad one. 22, 1000.) (nu Model.) i5 sheets-sneer i yi ".mwlllm n mlm` Isl lil! HI M M75 w dwz? p Z llllllllllllllIlIluumlllllllllllllllMl .l d

JEM-Mw y m/J F. L. CROSS. I FEE'DINGMMACHTNE.

(A'pplicaeiwmed oef. 22, moo.)

= No; 690,702. Patented aan. 7, |902;

. (No Model.)

5 sheets-sheet v2.

s i i YNE Nonms Firms' 'cnjPHom-UTMQ, WASI-woran c. c.

No. 690,702. Patented 1an.v 7.1902.,

vF. L. cnoss. FEEDING MACHINE. (Appliaion mea oct/22, 1900;) (No Nudel.) 5 sheeisfshest 3.

` fno. 690,702. Patented Jan. 7, |902.

F. L. cnoss.

FEEDING MACHINE..

(Applcaton lad Oct. 22, 1900.)

5 Sheet-Sheet 4.l

(No Hodel.)

Hz Nonlus PETERS co.. PHomLTNo. WASHINGTON. n. c.

No; 000,702.. 'vaunted 1an. 7, |002..

lF. L fcnossv. Y FEEDING MACHINE. (Application med ont. 22, 1900.) A (nu Model.) 5 sheets-sheet 5.

UNITED STATES PATENT OFFICE.

FRANK L. CROSS, OF MYSTIC,CONNECTICUT, ASSIGNOR TO AMERICAN PAPER FEEDER COMPANY, OF BOSTON, MASSACHUSETTS, A CORPO- RATION OF MATNE.

SPECIFICATION forming part of Letters Patent No, 690,702, dated January 7, 1902. Application led October 22, 1900. Serial No. 33,863. (No model.)

To a/ZZ whom t may concern:

Be it known that I, FRANK L. ORoss, o Mystic, in the county of New London and State of Connecticut, havel invented certain new and useful Improvements in Feeding- Machines, of which the following is a specification.

The invention relates to feeding-machines, and is more especially intended for use in connection with sheet-feeders in which individual sheets are separated from a pile or bank of sheets, so that they may be removed from the pile or bank and presented to machines or devices for further manipulating or acting on the sheets, although certain features of the invention may be employed in other forms of sheet-feeders or where it is desired to control the action of certain mechanism through the sheet or other article being acted upon or manipulated.

One objectof the invention is to provide simple and efficient mechanism for so controlling a feeding mechanism by the action of the sheet being fed that when the sheet arrives at a certain point the feeding action will cease, and this is accomplished by the use of controlling mechanism whichV is connected with its driver by the engagement ofa sheet-controlled pawl with the driver, the pawl being so controlled by the sheet that when the sheet has been advanced into a certain position by the feeding devices the pawl engages the driver, thus connecting the driver with the devices which` control the action of the feeding devices, thereby arresting the feeding action. The feeding devices may be of any suitable construction and form, and the feeding action of said devices may be arrested in various ways, the controlling devices or mechanism being modified to suilk the form of feeding devices and the manner in which their action is to be arrested. In any case the sheet is advanced by the action of the feeding devices and causes a pawl to engage a moving driving member, thereby connecting' said driving member with the controlling mechanism, so that the controlling mechanism is operated by the driver and arrests the feeding action of the feeding devices. 'lhus the controlling mechanism is positively and surely operated, while its operation may be accurately controlled by a device sufficiently sensitive to be operated by which is shown and will be more particularlyv defined in the claims.

For'the purpose of illustrating one form of 'a I machine in which the features of invention may be employed a machine is shown in which thepile of sheets is supported on a verticallymovable table and is acted upon by combing devices which act to comb or feather out the top sheets, advancing the top sheet to a greater extent than the sheets beneath it, so4

that said sheet may be acted upon by forwarding devices which deliver it to a machine designed for' acting upon individual sheets.

' Inv the drawings, Figure l is a plan view of such machine. Fig. 2 is a longitudinal vertical section. Fig. 3 is a side elevation. Fig. 4 is a detail of the mechanism for operating the forwarding-rolls. Fig. 5 is a detail showing the feeding and controlling mechanism during the feeding of the sheet.y Fig. 6 is a similar view with the feeding devices out of action. Fig. 7 is a detail of the mechanism for holding the trip out of contact with the sheet during the action of the-forwarding devices. Fig. 8 is a detail of thev devices for operating the table which supports the pile of sheets. Fig. 9 is a detail of a modification, to be referred to.

1n the machine shown rthe pile of sheets is supported on a vertically-movable table A in position to be acted upon by two combingrolls B of a well-known construction, which act to comb or feather out the top sheets, advan cing the top sheet to a greater extent than the sheets beneath it. The feeding and separating action of these rolls continues as long as they rotate in contact with the pile of sheets, and, as is well known, their action may be arrested either by stopping the rotation of the rolls or by disengaging the rolls and pile. In the machine shown the rolls are constantly rotated and are thrown out of action by disengaging the rolls and paper, the mechanisrn for controlling the feeding action being constructed to lift the rolls from the pile. The rolls are arranged to act upon the sides of the upper sheet and each is controlled independently of the other, being thrown out of action when the corresponding side of the sheet has been advanced to a certain point. The mechanisms for rotating and controlling the rolls are duplicates of each other, and the construction and operation of only one set of "\devices will therefore be described.

The roll B is secured to a transverse shaft Z9, journaled in arms Z9', which are secured to a rock-shaft b2, one end of which is supported in a bracket b3, the other end being supported in the frame. The bracket Z93 is secured to a bar b5, extending transversely above the table and secured lo the side frames of the machine. The shaft Z9 is driven constantly through a gear Z95,secured thereto and connected through intermediate gears Z97 Z98 with a gear Z9, which issecured to a transverse shaft Z910, mounted in bearings in the side frames. The gear Z)7 is loosely mounted on the shaft b2, and gear ZJS is loosely mounted on a shaft d20, to be hereinafter referred to. A sprocket-wheel Z911 is secured to the end of shaft Z310 and is con nected by a Z912 with a sprocket-wheel Z913, secured to a shaft d, which is driven through gears c c from a gear c2, secured to the main driving-shaft c3. By this gearing the roll B is constantly rotated without interfering with the vertical movement of the roll, since the gear Z97 is concentric with the axis about which the shaft ZJ is moved when the roll B is raised.

The devices for raising the roll B from the pile, and thereby arresting the combing action, comprise an arm Z914, mounted on the shaft Z9 and connected with a second arm or lever Z915, loosely mounted on a transverse rod 19150 by means of a rod Z916, the forward end of which is secured in a block Z917, pivoted to the end of lever Z915, and the rear end of which is secured in a block Z918, pivoted to the end of arm Z914. When the arm or lever Z915 is swung upward, as shown in Fig. 6, the arm Z911 is actuated to raise the combing-roll from the pile of sheets. The arm Z914may be connected with the combing-roll in any suitable manner, and the combing-roll may be lowered as well as raised by arms b11and Z915 and the rod Z916; but itis preferred to employ this controlling mechanism to raise the roll only and to provide other means for lowering the roll upon the pile. The arm Z114 is therefore in the construc- @come tion shown mounted loosely upon the shaftb and is provided with a lug Z920, arranged to engage a lug Z921 on a collar Z9210, secured to the shaft Z9. With this connection between the combing-roll. and arm Z91A1 the arm may be moved forward without affecting the combing-roll, but will lift said roll on its backward movement, the roll having been lowered upon the pile by other mechanism. The mechanism for operating the controlling mechanism to arrest the feeding action consists of a driver in the form of a disk Z922, secured to the shaft c3, and a pawl Z923, arranged to engage teeth orshoulders on the driver, and thus connect the driver and controlling mechanism. The pawl Z923 is connected with the controlling mechanism by being mounted in an arm or block Z921, connected or formed integral with the arm Z915. The pawl is normally or during the feeding action of the combingroll out of the path of the teeth on the driving-disk, but is so controlled by the sheet that when the front edge of the sheet reaches a certain position the pawl moves into position to engage a tooth of the driver. It is preferred to thus control the pawl by a trip-lever Z925, arranged in the path of the sheet and connected with a catch o1' pawl Z926, which holds the pawl 523 out of the path of the teeth on the driver until the front edge of the sheet operates the lever Z925, when the pawl Z926 releases pawl Z923, causing said pawl to engage the driver. The lever Z925 and the pawl Z126 are secured to a rockshaft 6250, journaled in arms 11260, which are secured to the rod Z9150. Instead of controlling pawl 192iE through a second pawl it is obvious that the sheet-operated tripcould be connected directly with the pawl for engaging the driver, as shown in Fig. 9, in which ease the action of the sheet would move the pawl into engagement with lthe driver. The pawl Z923 is piv oted in the block Z921, and its movement about the pivot is limited by a pin Z927, Working n a slot 52S. When the pawl Z923en gages the driver, it is thrown downward, rocking the arm Z915 upward, and at the same time the block b2'1 swings away from the driver. The end of the pawl, however, continues in engagement with the driver until the combing-roll has been lifted, when the pawl is disengaged by its movement about the rod Z915. After the combing-roll has been thrown out of action it is held out until the sheet has been removed, and then the controlling mechanism is reset or moved into position to be again operated by the driver, after which the combing-roll is p again thrown into action. The means for holding the combing-roll out of action employed in the construction shown consists of a spring Z919, having one end secured to the rod Z916 and the other end secured to the bar Z95. lVith this form of means for holding the combing-roll out of action the resetting of the controlling means puts the spring bw under tension, and the parts are therefore so arranged that when the mechanism is reset the pivot of block Z91T is in or below the line passing through the IOO IXO

centers of the pivot of block Z918 and rod Z9159, and thus the spring will not affect the position of the controlling mechanism until it has been operated by the driver. With the pawl controlled in the manner shown it is obvious that the controlling mechanism would be held in position by the engagement of the pawl Z929 with the pawl Z926, even if the parts were not brought into the position described; but itis preferred to relieve the pawls of any holding action, so that the only work done by pawl Z925 is to support the pawl Z929, as with this arrangement the tripping devices are rendered more sensitive and may be more accurately and readily operated by very thin sheets.

rlhe means shown for resetting the controlling mechanism consists of a roll Z929, carried on an arm Z999, secured to the shaft c3, and a plate Z951, secured to the rod Z916 and arranged to lie in the path of the rollb29 when the controlling mechanism has been, operated to arrest the feeding action. After the sheet which caused the combing-roll to be thrown ont of action has been removed thev rotation of shaft c2 brings the roll Z929 into engagement with the plate Z931, thereby forcing lsaid plate and the bar Z916 forward untilvthe controlling mechanism is in the position shown in Fig. 5, when the roll'passes over the top of said plate. During the action of the roll Z929 on the plate Z991 the block b24 andpawl Z92 are carried toward the shaft o9, and the end of pawl Z92S strikes against an abutment Z992, carried by shaft o9, and said pawl is rocked on its pivot into position -to be supported by the pawl Z929, with its end out of the path of the teeth on the driver. The abutment isA preferably formed on the disk Z922, and after the pawl Z926 engages the pawl Z9'23 said abutment passes out of engagement with pawl Z922, leaving said pawl free to engage the driver' when released by the action of ythe sheet.

The preferred means for lowering the combing-roll onto the pile consists of a cam Z955, secured tothe shaft cs and acting on'a roll Z924, carried by a rod Z955, one end of which is mounted to slide in a block Z929, hung loosely on the shaft a9, and the other end of which is pivoted vtoan arm Z937, secured to a short shaft Z935, journaled in the brackets Z92v in line with shaft Z9. The shaft Z958 carries arms Z929, which underlie the arms Z9', which carry the combing-rolls, and controlv the downward movement of said arms Z9" and rolls, but do not interfere with their upward movement under the action' of the controlling mechanisms The cam is so timed that the combing-roll is held away from the pile until the controlling mechanism has been reset and the abutment moved into a position which allows the pawl to engage the driver, even if it should be immediately tripped when the combing roll strikes the pile. Thus the proper action of the controlling mechanism is insured even if the sheet whichis next to be fed is very nearly in engagement with the lever Z925 when the combing-.roll is lowered. This condition of the sheets may occur under some conditions and in case the combing-roll were lowered by the controlling mechanism might result in an operation of the trip before the parts were in position to act properly, thereby reducing the efficiency of the machine.

The combing-roll may merely rest with its own weight upon the pile, or means may be employed for varying the pressure of the roll to suit varying conditions. The means shown for varying the pressure of the roll consists of a spring-Z949, one end of which is connected to an arm Z941, secured to the collar Z9219, and the other end of which is secured to a collar Z942, which may be adjusted on rod Z916 to vary the tension of the spring, and thus vary the pressure of the roll on the pile. Y

The combing-rolls are lowered upon the pile simultaneously, and each continues to act until the front edge of the top sheet at the corresponding side of the sheet acts upon trip Z925 at that side, when the action of that combing-roll is arrested, the other roll continuing to advance the other side of the sheet until it is in proper position to arrest the action of said roll. Thus the front edges of successive sheets are brought into the same line and into position to be removed and delivered to other machines. In the machine' shown the front edge of the sheet is advanced by the feeding f devices into position between forwarding-rolls D D', the rolls D being secured to the continuously-driven shaft d, which is mounted in fixed bearings below the plane of the sheets, and the rolls Dl being secured to averticallymovable shaft CZ', which is lowered to engage the rolls D with the sheet after the combingrolls have ceased to act and is raisedafter the sheet has been delivered to machine in which it is to be further manipulated. The shaft d ismounted in' arms d2, secured to a shaft d5, to which is also secured an arm d4, Fig. 4, arranged to engage a lug d5, which projects from a lever CZ9, loosely mounted on shaft d3. The lever d6 is operated to raise and lower the rolls D by a cam CF, secured to shaft e9 and engaging a roll ds on thev end of lever d5, Fig. 4. g The shaft d' is connected with shaft dk by gears d9, and the movement of shaft d is such that these gears always remain in mesh, so that rolls D' are constantly -rotated. The rolls D are lowered intoen- IOO IOS

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gagement with the' sheet or the rolls Dat au l definite time after the combing-rolls have been lowered and are raised at adenite time, the

cam d1 being so constructed that the rolls D remain in action a sufficient time to removeA wise the delivery of the sheet will not be.

properly timed with relation to the operation ofthe machine to which the sheets 'are being fed. To avoid any danger of sheets being thus delivered out of time, the action of the combing-rolls is arrested prior to the lowering of rolls D' even should the sheet not have been advanced by the combing-rolls at that time into the proper position to act on the trips and be acted on by the rolls D D'. This is preferably accomplished by so forming the cam Z932 that it will lift the combing-rolls prior to the lowering of rolls D', provided they have not already been lifted by the controlling mechanism.

The levers b25 may rest on the sheet as it is being delivered; but for some classes of work it is desirable that said levers should not thus engage the sheet,`and the machine is accordingly provided lwith means for holding said levers out of the path of the sheet being delivered. This means consists of an arm e, secured to shaft Z925@ and having its end engaging a recess in one end of a lever e', mounted loosely on rod 13120, and carrying a roll e3 at its other end, which engages a cam e4, secured to shaft c2. This cam is so shaped that it rocks the lever e in a direction to lift the trip-lever Z925 when the roll D' is lowered and in a direction to lower the trip-lever 1125 after the sheet has been delivered.

While the sheet is being removed by the rolls D D' or by the devices of the machine to which the sheets are being fed the remaining sheets of the pile are held from displacement by fingersf, which rest upon the top of the pile back of the top sheet. These n gers are adj ustably secured in the ends of weighted armsf', loosely mounted on a rock-shaft f2. The arms are provided with rearwardlyprojecting lugs f2, which underlie yokes fso, secured to the Shaftf2. The shaft F2 is rocked to raise and lower the ngers f by a cam f4, secured to the shaft c3, and engaging a roll f5 on the end of a lever f6, which is loosely mounted on rod 5150 and has its lower end connected with an end of a rod f1, the other end of which is pivoted to an arm f8, secured to shaft f2. The cam f4 is so formed that the fingers are lowered upon the pile just prior to the lowering of rolls D and are raised be fore the combing-rolls are lowered.

As the sheets are removed from the pile the table A should be raised to keep the top of the pile in proper relation to the combingrolls, and this is preferably done automatically, so that the machine will not require attention until the pile of sheets is exhausted. After the pile has been exhausted the table must be lowered to receive a fresh supply of sheets, and the efficiency of the machine is increased by so constructing the means for operating the table that the table may be quickly and conveniently lowered and the loss of time in resupplying the machine with sheets thus reduced to a minimum. The mechanism shown for operating the table effects these results and embodies certain features of invention. As shown, each side of the table is supported in a loop of a chain c,

ratchet-wheel @11.

one end of which is secured to the frame at Each chain extends from the point adown under a roller @10 on the table A, then up over a sprocket-wheel d2, secured to a shaft @20, thence over a roller a3, around a roller @1 on the end of a counter-weight @5, and is sef cured to the frame. This counterweight @5 is substantially the same weight as the table when unloaded, and the table may therefore be manually manipulated when empty with little exertion. Moreover, by supporting the table in loops of chains or bands a heavy load of sheets may be lifted or fed upward without undue strain on the operating mechanism. The shaft d20 carries a gear @1i on the outer end, which is engaged by a pinion @7, secured to a short shaft @8, journaled in the frame and in a bracket @9, secured thereto. A ratchetewheel @11 is secured to the shaft @8 and is engaged by a stop-pawl @12, so that the downward movement of the table A is prevented so long as the pawl @12 engages the The outer end of the shaft @1 is squared to receive a crank-handle by which the table may be readily raised or lowered manually, the pawlct12 being disengaged when it is desired to lower the table. The mechanism for automatically raising the table comprises a pawl 113 normally out of engagement with the ratchet 0,11, but thrown into action when the top of the pile of sheets is below a certain level. The pawl @13 is pivoted on a carryingarm @14, loosely mounted on the shaft @8 and continuously oscillated by a crank-arma, secured to the shaft c1 and connected with the arm @14 by a rod @16. When the top of the pile of sheets is above a certain level, the pawl rides idly over the ratchet by reason of a guard @17, which under,- lies a pin @18 on the pawl and is controlled by the position of the top of the pile on the table. The guard a" is formed on the end of a lever @111, pivoted on the shaft @S and having its lower end weighted and provided with a pin @21, which rests against the lower end of the pawlcarrying arm (L14. The weight of the lever c1111 keeps the pin against the pawl-carrying arm, and the guard @17 therefore moves with the pawl and holds it out of engagement. When the top of the pile is below a certain level, however, the movement of the lever @111 is arrested and then the pin @21 passes off the guard @17, and the pawl @13 engages the ratchet-wheel @11 and feeds the same forward, thus raising the table A. The means for arresting the movement of the lever @19 comprises an arm or pawl @22, provided with a shoulder @23, which is moved into the path of the pin @21, which projects from the lever @12 on the opposite side from the arm am. The arm @22 is connected with a device which engages the top of the pile of sheets, and as the top of the pile is lowered the arm L22 is lowered until the shoulder @23 comes into the path of the pin @21. The end of the arm @22 is provided with a camsurface 0.21, under which the pin w21 may ride during the back stroke of pawl-carryin g arm,

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l v l the arm L22 being so mounted that it may be lifted by the action of the pin on the back stroke, but will fall after the pin has' passed the shoulder 0.23, thus bringing the shoulder in front of the pin on the forward stroke. ln the machine shown the combing-rolls are arranged to follow the top of the pile within certain limits, and they are connected with the arm a@ and form the device'for engaging the top of the pile. Thearm L22 is therefore supported on' the shaft b2 and follows the movementof said shaft as the combing-rolls are lowered onto the pile. The mechanism described is a simple and efficient mechanism for automatically operating and controlling the table A and does not'interfere with or re- .quire any manipulation when the table is to be lowered for a fresh supply of sheets.

The front edges of the sheets which are advanced by the action of the combing-rolls may be supported by guide-bars G, which extend horizontally from the front of the-table, being horizontal extensions of the vertical bars G at the front. of the table. The edge of the top sheet may be, and peferably is, supported against the trip-levers by rolls g, mounted on the shaft d and provided with grooves in which the trip-levers lie when in position to be operated by the sheet.

- The machine may be connected with the machine to which thesheets are to be fed by proper gearing to time the feeding of the sheets properly, or said machine may be operated through a pulley P, secured to shaft c3.

What I claim, and'desire'to secure by Letters Patent, is

l. The combination with feeding mechan- -of an oscillating block connected therewith,

ism, of mechanism for arresting the action of the same comprising, a driver andfa pawl which is engaged with the driver by the action of the sheet.

2. The combination with feeding mechanism, of mechanism for controlling the-same, a driver for operating said controlling mechanism and a pawl controlled by the article fed for connecting said Vcontrolling mechanism and driver. f

3. The combination with feeding mechanism, of mechanism for disengaging said feeding mechanism and the sheets, a driver for operating said disengaging mechanism, and a sheet controlled pawl for connecting said driver and disengaging mechanism.

4. The combination with a feeding device, of mechanism for raising said device from the sheets, a driver for operating said raising mechanism, and a pawl carried by said raising mechanism and engaged with said driver by the action of the sheet.

`5. The combination with a feeding device, of mechanism for arresting the action of the same, a driver for operating said arresting mechanism, a pawl for connecting said driver and arresting mechanism engaged with said driver by the action of the sheet, and mechanism for resetting the arresting mechanism and pawl.

6. The combination with a feeding' device,

of mechanism for arresting the'action of the same, a driver for operating` said arresting mechanism, a pawl for connectingsaid driver and arresting mechanism engaged with said driver by action of the sheet, mechanism for resetting the'arresting mechanism and pawl, and mechanism for throwing the feeding device into action. 4

7. The combination with a feeding device,

of mechanism for arresting the action of the same, a driver 'for operating said arresting mechanism, 'a pawl for connecting said driver y lof an oscillating block connected therewith,

a rotating disk having teeth, a pawl carried .by said block and normally out ofthe path of said teeth, and a trip for causing the'engagement of said pawl with said teeth.

9. The combination of a rotary disk having teeth, a mechanism operated by said disk, a pawl carried by said mechanism and normally ont of the path of said'teeth, and atrip for causing said pawl to engage -said teeth and connect said disk and mechanism.

l0. The combination of a rotary disk hav- `ing teeth, an oscillating block, a pawl mounted on said block and normally out of the path of said disk, and means for engaging said pawlwit-h said teeth.

v1l. The combination with a feeding device,

a rotary disk having'teet-h, a pawl carried by 'said block and engaged with said teeth by the action of the sheet.

l2. The combination with a feeding device, of an oscillating block Vconnected-therewith, a rotary disk having teeth, a pawl carried by said block and engaged with said teeth by the action of the sheet, and means for returning the block and pawl to position to be again connected with said disk.

13. The combination with a feeding device, of an oscillating block connected'therewith, a rotary disk having teeth, a pawl carried by said block, and a trip-lever for holding said pawl out of engagement with said teeth.

14. The combination with -a feeding device, of an oscillating block connected therewith,a rotary disk having teeth, a pawl carried by said block and engaged with said teeth by the action of the sheet, means for returning said block,and a moving abutmentengaged by said pawl'on the return of said block.

15. The combination with a feeding device, of an oscillating block connected therewith,a

rotary disk having teeth, a pawl carried byA return said block.

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16. The combination with a combing-roll, of .an arm connected to lift the same, a rod pivoted to said arm,an oscillating arm pivoted to said rod, a paWl connected with said oscillating arm, a rotary disk having teeth, and a trip in the path of the sheet for causing the engagement of said pawl with said teeth.

17. The combination with devices for acting on a pile ot' sheets, of a table for carrying the pile of sheets, a chain having a loop in which said table is supported, a sprocketwheel over which said chain passes,a counterweight acting on said chain, a ratchet-wheel connected with said sprocket-Wheel, and a stop-pawl engaging said ratchet to prevent the descent of the table.

1S. The combination with devices for acting on a pile of sheets, of a table for carrying the pile, a chain having a loop in which said table is supported, a coun terweight acting on said chain, a sprocket-wheel over which said chain passes, a shaft connected with said sprocket-Wheel to operate the same, a ratchetwheel secured to said shaft, a stop-pawl engaging said ratchet-wheel, means whereby said shaft may be manually operated, and a pawl controlled bythe level ot the top of the pile on the table for operating said ratchet- Wheel.

19. The combination with devices for operating on a pile of sheets, of a table for carrying said pile, a ratchet-Wheel connected to raise said table when rotated, a reciprocating pawl, a guard reciprocating therewith for preventing the engagement of the pawl with said ratchet-Wheel, and means controlled by the level of the pile for arresting the movement of the guard.

20. The combination with devices for operating on a pile of sheets, of a table for carrying said pile, a ratchet-wheel connected to raise said table when rotated, a reciprocating pawl, a guard reciprocating therewith for preventing engagement of said pawl With said` ratchet-wheel, an arm having a shoulder for engaging said guard and arresting the same, and a device engaging the top of the pile connected with said arm.

In testimony whereof I have affixed my signature in presence of two Witnesses.

FRANK L. CROSS. \Vitnesses:

IRA L. FISH, CHARLES E. HAYwooD. 

